Triangles- Types + Angle Sum

Find the third angle of this triangle .

• 60 degree

• 70 degree

• 80 degree

• 100 degree

If all my sides are different in lengths , is called

• Equilateral Triangle

• Acute triangle

• Isosceles Triangle

• Scalene Triangle

If my 2 sides are equal in lengths is called

• Obtuse Angled Triangle

• Right Angled Triangle

• Isosceles Triangle

• Equilateral Triangle

If all my sides are equal in lengths , is called

• Scalene Triangle

• Right Angled Triangle

• Equilateral triangle

• Obtuse triangle

What is the sum of the measures of the angles of any triangle?

• 90°

• 360°

• 180°

• 45°

Find the measure of the missing angle.

• 47
• 57
• 53
• 133

Find the measure of the missing angle.

• 145
• 55
• 35
• 45

Find the measure of the missing angle.

• 135^o
• 35^o
• 45^o
• 30^o

A triangle has one angle that measures 61 degrees, one angle that measures 44 degrees, and one angle that measures 75 degrees.  What kind of triangle is it? 

• right triangle
• obtuse triangle
• acute triangle
• equilateral triangle

This is a right triangle because —

• it is facing the right way

• it has 3 acute angles

• it has one 90 degree angle

• it does not have one obtuse angle